/*
     This file is part of GNUnet.
     Copyright (C) 2013 GNUnet e.V.

     GNUnet is free software; you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published
     by the Free Software Foundation; either version 3, or (at your
     option) any later version.

     GNUnet is distributed in the hope that it will be useful, but
     WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     General Public License for more details.

     You should have received a copy of the GNU General Public License
     along with GNUnet; see the file COPYING.  If not, write to the
     Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     Boston, MA 02110-1301, USA.
*/
/**
 * @file namestore/test_namestore_api_monitoring.c
 * @brief testcase for zone monitoring functionality: add records first, then monitor
 */
#include "platform.h"
#include "gnunet_namestore_service.h"
#include "gnunet_testing_lib.h"
#include "namestore.h"


#define TIMEOUT GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 100)

static const struct GNUNET_CONFIGURATION_Handle *cfg;

static struct GNUNET_NAMESTORE_Handle * nsh;

static struct GNUNET_SCHEDULER_Task * endbadly_task;

static struct GNUNET_CRYPTO_EcdsaPrivateKey * privkey;

static struct GNUNET_CRYPTO_EcdsaPrivateKey * privkey2;

static struct GNUNET_NAMESTORE_ZoneMonitor *zm;

static int res;

static char * s_name_1;

static struct GNUNET_GNSRECORD_Data *s_rd_1;

static char * s_name_2;

static struct GNUNET_GNSRECORD_Data *s_rd_2;

static char * s_name_3;

static struct GNUNET_GNSRECORD_Data *s_rd_3;

struct GNUNET_NAMESTORE_QueueEntry * ns_ops[3];

static char *directory;


static void
do_shutdown ()
{
  if (NULL != zm)
  {
    GNUNET_NAMESTORE_zone_monitor_stop (zm);
    zm = NULL;
  }

  if (NULL != ns_ops[0])
  {
  	GNUNET_NAMESTORE_cancel(ns_ops[0]);
  	ns_ops[0] = NULL;
  }
  if (NULL != ns_ops[1])
  {
  	GNUNET_NAMESTORE_cancel(ns_ops[1]);
  	ns_ops[1] = NULL;
  }
  if (NULL != ns_ops[2])
  {
  	GNUNET_NAMESTORE_cancel(ns_ops[2]);
  	ns_ops[2] = NULL;
  }

  if (NULL != nsh)
  {
    GNUNET_NAMESTORE_disconnect (nsh);
    nsh = NULL;
  }

  GNUNET_free_non_null(s_name_1);
  GNUNET_free_non_null(s_name_2);
  GNUNET_free_non_null(s_name_3);

  if (s_rd_1 != NULL)
  {
    GNUNET_free ((void *)s_rd_1->data);
    GNUNET_free (s_rd_1);
  }
  if (s_rd_2 != NULL)
  {
    GNUNET_free ((void *)s_rd_2->data);
    GNUNET_free (s_rd_2);
  }
  if (s_rd_3 != NULL)
  {
    GNUNET_free ((void *)s_rd_3->data);
    GNUNET_free (s_rd_3);
  }

  if (NULL != privkey)
  {
    GNUNET_free (privkey);
    privkey = NULL;
  }
  if (NULL != privkey2)
  {
    GNUNET_free (privkey2);
    privkey2 = NULL;
  }
}


/**
 * Re-establish the connection to the service.
 *
 * @param cls handle to use to re-connect.
 */
static void
endbadly (void *cls)
{
  do_shutdown ();
  res = 1;
}


static void
end (void *cls)
{
  do_shutdown ();
  res = 0;
}


static void
zone_proc (void *cls,
	   const struct GNUNET_CRYPTO_EcdsaPrivateKey *zone_key,
	   const char *name,
	   unsigned int rd_count,
	   const struct GNUNET_GNSRECORD_Data *rd)
{
  static int returned_records;
  static int fail = GNUNET_NO;

  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
	      "Comparing results name %s\n",
	      name);

  if (0 != memcmp (zone_key, privkey, sizeof (struct GNUNET_CRYPTO_EcdsaPrivateKey)))
  {
    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
  	      "Monitoring returned wrong zone key\n");
    GNUNET_break (0);
    GNUNET_SCHEDULER_cancel (endbadly_task);
    endbadly_task = GNUNET_SCHEDULER_add_now (&endbadly, NULL);
    return;
  }

  if (0 == strcmp (name, s_name_1))
  {
    if (GNUNET_YES != GNUNET_GNSRECORD_records_cmp(rd, s_rd_1))
    {
      GNUNET_break (0);
    	fail = GNUNET_YES;
    }
  }
  else if (0 == strcmp (name, s_name_2))
  {
    if (GNUNET_YES != GNUNET_GNSRECORD_records_cmp(rd, s_rd_2))
    {
      GNUNET_break (0);
    	fail = GNUNET_YES;
    }
  }
  else
  {
    GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
  	      "Invalid name %s\n",  name);
  	GNUNET_break (0);
    fail = GNUNET_YES;
  }

  if (2 == ++returned_records)
  {
    if (endbadly_task != NULL)
    {
      GNUNET_SCHEDULER_cancel (endbadly_task);
      endbadly_task = NULL;
    }
    if (GNUNET_YES == fail)
      GNUNET_SCHEDULER_add_now (&endbadly, NULL);
    else
    	GNUNET_SCHEDULER_add_now (&end, NULL);
  }
}


static void
fail_cb (void *cls)
{
  GNUNET_assert (0);
}


static void
sync_cb (void *cls)
{
  /* do nothing */
}


static void
put_cont (void *cls, int32_t success, const char *emsg)
{
  static int c = 0;
  char *label = cls;

  if (0 == strcmp (label, s_name_1))
  	ns_ops[0] = NULL;
  else if (0 == strcmp (label, s_name_2))
  	ns_ops[1] = NULL;
  else if (0 == strcmp (label, s_name_3))
  	ns_ops[2] = NULL;

  if (success == GNUNET_OK)
  {
    c++;
    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Created record %u: `%s'\n", c, label);
  }
  else
  {
    GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Failed to created records\n");
    GNUNET_break (0);
    GNUNET_SCHEDULER_cancel (endbadly_task);
    endbadly_task = GNUNET_SCHEDULER_add_now (&endbadly, NULL);
  }

  if (3 == c)
  {
    /* Start monitoring */
    zm = GNUNET_NAMESTORE_zone_monitor_start (cfg,
                                              privkey,
                                              GNUNET_YES,
                                              &fail_cb,
                                              NULL,
                                              &zone_proc,
                                              NULL,
                                              &sync_cb,
                                              NULL);
    if (NULL == zm)
    {
      GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Failed to create zone monitor\n");
      GNUNET_break (0);
      endbadly_task = GNUNET_SCHEDULER_add_now (&endbadly, NULL);
      return;
    }
  }
}


static struct GNUNET_GNSRECORD_Data *
create_record (unsigned int count)
{
  unsigned int c;
  struct GNUNET_GNSRECORD_Data * rd;

  rd = GNUNET_malloc (count * sizeof (struct GNUNET_GNSRECORD_Data));
  for (c = 0; c < count; c++)
  {
    rd[c].expiration_time = GNUNET_TIME_relative_to_absolute (GNUNET_TIME_UNIT_HOURS).abs_value_us;
    rd[c].record_type = 1111;
    rd[c].data_size = 50;
    rd[c].data = GNUNET_malloc(50);
    rd[c].flags = 0;
    memset ((char *) rd[c].data, 'a', 50);
  }
  return rd;
}


static void
run (void *cls,
     const struct GNUNET_CONFIGURATION_Handle *mycfg,
     struct GNUNET_TESTING_Peer *peer)
{
  char *hostkey_file;

  directory = NULL;
  GNUNET_assert (GNUNET_OK ==
                 GNUNET_CONFIGURATION_get_value_string(mycfg, "PATHS", "GNUNET_TEST_HOME", &directory));
  GNUNET_DISK_directory_remove (directory);

  res = 1;

  GNUNET_asprintf(&hostkey_file,
		  "zonefiles%s%s",
		  DIR_SEPARATOR_STR,
		  "N0UJMP015AFUNR2BTNM3FKPBLG38913BL8IDMCO2H0A1LIB81960.zkey");
  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
	      "Using zonekey file `%s' \n", hostkey_file);
  privkey = GNUNET_CRYPTO_ecdsa_key_create_from_file(hostkey_file);
  GNUNET_free (hostkey_file);
  GNUNET_assert (privkey != NULL);

  cfg = mycfg;
  endbadly_task = GNUNET_SCHEDULER_add_delayed (TIMEOUT, &endbadly, NULL);
  /* Connect to namestore */
  nsh = GNUNET_NAMESTORE_connect (cfg);
  if (NULL == nsh)
  {
    GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Connect to namestore\n");
    GNUNET_break (0);
    endbadly_task = GNUNET_SCHEDULER_add_now (&endbadly, NULL);
    return;
  }

  GNUNET_asprintf(&hostkey_file,"zonefiles%s%s",
		  DIR_SEPARATOR_STR,
		  "HGU0A0VCU334DN7F2I9UIUMVQMM7JMSD142LIMNUGTTV9R0CF4EG.zkey");
  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Using zonekey file `%s' \n", hostkey_file);
  privkey2 = GNUNET_CRYPTO_ecdsa_key_create_from_file(hostkey_file);
  GNUNET_free (hostkey_file);
  GNUNET_assert (privkey2 != NULL);


  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Created record 3\n");
  /* name in different zone */
  GNUNET_asprintf(&s_name_3, "dummy3");
  s_rd_3 = create_record(1);
  GNUNET_assert (NULL != (ns_ops[2] = GNUNET_NAMESTORE_records_store (nsh, privkey2, s_name_3,
  		1, s_rd_3, &put_cont, s_name_3)));

  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Created record 1\n");
  GNUNET_asprintf(&s_name_1, "dummy1");
  s_rd_1 = create_record(1);
  GNUNET_assert (NULL != (ns_ops[0] = GNUNET_NAMESTORE_records_store(nsh, privkey, s_name_1,
  		1, s_rd_1, &put_cont, s_name_1)));


  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Created record 2 \n");
  GNUNET_asprintf(&s_name_2, "dummy2");
  s_rd_2 = create_record(1);
  GNUNET_assert (NULL != (ns_ops[1] = GNUNET_NAMESTORE_records_store(nsh, privkey, s_name_2,
  		1, s_rd_2, &put_cont, s_name_2)));


}


int
main (int argc, char *argv[])
{
  res = 1;
  if (0 !=
      GNUNET_TESTING_peer_run ("test-namestore-api-monitoring",
                               "test_namestore_api.conf",
                               &run,
                               NULL))
  {
    res = 1;
  }
  if (NULL != directory)
  {
      GNUNET_DISK_directory_remove (directory);
      GNUNET_free (directory);
  }
  return res;
}


/* end of test_namestore_api_monitoring.c */
